uvm_fault(fffffd80699d2980,7c7cec08000,0,2) at uvm_fault+0x19c sys/uvm/uvm_fault.c:685
upageflttrap(ffff80002a2bf9d0,7c7cec081d0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a2bf9d0) at usertrap+0x403 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f34e6a92ed0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806b6e81c0,9,0) at witness_checkorder+0x10fb sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806b6e81a8,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:232
rrw_enter(fffffd806b6e81a8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:605
VOP_LOCK(fffffd805d074518,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527
vn_lock(fffffd805d074518,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_lookup(ffff80003a405528) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
namei(ffff80003a405528) at namei+0x7aa sys/kern/vfs_lookup.c:250
unp_connect(ffff800010fdd138,fffffd805f5d2400,ffff80003c47b4b0) at unp_connect+0x27d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800010fdd138,fffffd8063936e00,fffffd805f5d2400,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:609
sosend(ffff800010fdd138,fffffd805f5d2400,ffff80003a4057a8,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff80003c47b4b0,3,ffff80003a405920,8,ffff80003a4059e0) at sendit+0x721 sys/kern/uipc_syscalls.c:779
sys_sendmsg(ffff80003c47b4b0,ffff80003a405a90,ffff80003a4059e0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597
syscall(ffff80003a405a90) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003a405a90) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9ee4dd6810, count: -15